Remove unused files from webkitpy.

Tools/Scripts/webkitpy/common/checkout/scm/commitmessage.py

-# Copyright (c) 2009, 2010, 2011 Google Inc. All rights reserved.
-# Copyright (c) 2009 Apple Inc. All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-import re
-
-
-def _first_non_empty_line_after_index(lines, index=0):
-    first_non_empty_line = index
-    for line in lines[index:]:
-        if re.match("^\s*$", line):
-            first_non_empty_line += 1
-        else:
-            break
-    return first_non_empty_line
-
-
-class CommitMessage:
-    def __init__(self, message):
-        self.message_lines = message[_first_non_empty_line_after_index(message, 0):]
-
-    def body(self, lstrip=False):
-        lines = self.message_lines[_first_non_empty_line_after_index(self.message_lines, 1):]
-        if lstrip:
-            lines = [line.lstrip() for line in lines]
-        return "\n".join(lines) + "\n"
-
-    def description(self, lstrip=False, strip_url=False):
-        line = self.message_lines[0]
-        if lstrip:
-            line = line.lstrip()
-        if strip_url:
-            line = re.sub("^(\s*)<.+> ", "\1", line)
-        return line
-
-    def message(self):
-        return "\n".join(self.message_lines) + "\n"